Bullet delivery device for air guns

ABSTRACT

A bullet delivery device for an air gun includes strike rod which is moved by a spring when the trigger is pulled and a spiral section is connected to the strike rod so that the pressurized air is guided and accelerated via the spiral groove to deliver the bullets out from the chamber of the barrel.

FIELD OF THE INVENTION

The present invention relates to a bullet delivery device for ejecting bullets from the barrel of an air gun the device includes a strike rod with a spiral section which guides the air flow to eject the bullets.

BACKGROUND OF THE INVENTION

A conventional air gun such as paint ball marker uses pressurized air to eject the paint balls which go out from the barrel at a speed. The speed varies depending on the force that applies to the paint balls. Generally, the pressurized air is introduced into the barrel of the air gun via a valve device by pulling the trigger of the air gun. In order to send the paint balls to a far distance, the barrel is made as long as possible so that the paint balls can be kept being pushed by pressurized air longer. However, the longer barrel makes the air gun to be too heavy to carry and the users cannot hold the air gun for longer time.

The present invention intends to provide a bullet delivery device of an air gun which includes a strike rod for pushing the bullets out from the barrel and the strike rod includes a spiral section which guides and accelerate the air to push the paint balls at higher speed.

SUMMARY OF THE INVENTION

The present invention relates to a bullet delivery device for an air gun and the device includes a strike assembly received in the barrel and includes a strike bar which has a pull end exposed out from the barrel and a push member is connected with the strike bar. A pawl is pivotably connected to the barrel and has one end removably engaged with a groove of the push member when the strike bar is pulled backward. The pawl is pivoted to release the push member by pulling the trigger so that the push member moves toward a valve assembly by a first spring. A strike rod has a first end fixed to the strike bar and a second end of the strike rod has a spiral section. The spiral section is located in a chamber in the barrel so as to hit the bullets. The valve assembly is received in the barrel and includes a tubular member and a piston movably extends through an axial passage of the tubular member. A gap is defined between the piston and an inner periphery of an aperture defined through the tubular member. A first end of the piston extends out from the tubular member and faces the push member. A second end of the piston is fixed to a seal which is biased by a second spring so as to removably seal the aperture of the aperture in the tubular member. A radial hole is defined through a wall of the tubular member and communicates with the chamber of the barrel. A magazine is connected to the barrel so as to feed bullets into the chamber of the barrel.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the air gun of the present invention;

FIG. 2 is an exploded view to show the bullet delivery device and the air gun of the present invention;

FIG. 3 shows that the strike bar is not pulled backward and the bullet does not enter the chamber of the barrel;

FIG. 4 shows that the strike bar is pulled backward and the bullet enters the chamber of the barrel;

FIG. 5 shows that the bullet is ejected out from the barrel when the trigger is pulled, and

FIG. 6 is an enlarged view to show the air enters the chamber to send the bullet out from the barrel.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 3, the air gun 1 of the present invention comprises a handle 11 with a barrel 12 connected to the handle 11, and a trigger 15 is connected to the barrel 12. A magazine 13 is connected to a top of the barrel 12 so as to feed bullets into the chamber of the barrel 12. An air bottle is connected to the barrel 12 to provide pressurized air into the barrel 12.

The bullet delivery device includes a strike assembly 2 which is received in the barrel 12 and includes a strike bar 21 which has a pull end 27 extending from an open path in a rear end of the barrel 12 and a push member 23 is connected to the strike bar 21 by a pin 22 connected therebetween. The strike bar 21 is located parallel to the push member 23.

A pawl 16 is pivotably connected to the barrel 12 and the push member 23 includes a groove 231 so that the pawl is removably engaged with the groove 231 when the user pulls the pill end 27 backwards as shown in FIG. 4. When the trigger 15 is pulled, the pawl 16 is pivoted so that the pawl 16 is disengaged from the groove 231 and the push member 23 moves left in FIG. 4. A strike rod 26 has a threaded section 261 on the first end thereof and the strike bar 21 has a threaded hole 211 defined therein so that the threaded section 261 is connected to the threaded hole 211. A second end of the strike rod 26 has a spiral section which is located in a chamber in the barrel 12. The bullets 5 such as paint balls enter the chamber when the spiral section is moved backward. A first spring 25 is connected between the attached member 14 and an end cap 14 connected to the rear end of the barrel 12. The end cap 14 is positioned by a position rod 141 extends laterally into the barrel 12.

A valve assembly 3 is received in the barrel 12 and communicates with a path from which the pressurized air is provided from the air bottle. The valve assembly 3 includes a tubular member 31 and a piston 33 movably extends through an axial passage 311 of the tubular member 31. The piston 33 has a flat surface 331 defined in an outside thereof and a gap is defined between the flat surface 331 and the inner periphery of an aperture defined in an end of the tubular member 31. A first end of the piston 33 extends out from the tubular member 31 and faces the push member 14. A second end of the piston 33 includes a threaded end 332 and a seal 32 has a threaded hole 321 with which the threaded end 332 is connected. The seal 32 is biased by a second spring 34 so as to removably seal the aperture of the aperture in the tubular member 31. A radial hole 312 is defined through a wall of the tubular member 31 and communicates with the chamber of the barrel 12.

As shown in FIGS. 5 and 6, when pulling the trigger 15, the push member 23 is released and pulled by the first spring 25, so that a boss 24 on an end of the push member 23 hits the first end of the piston 33, so that the piston 33 is moved and the seal 32 is removed from the aperture of the tubular member 31. It is noted that when the trigger 15 is not pulled, the space around the piston 33 and the seal 32 is filled with the pressurized air, so that when the seal 32 moves away, the pressurized air enters the tubular member 31 via the gap and enters the chamber. In the meanwhile, when the push member 32 is released, the strike bar 21 and the strike rod 26 move to hit the bullet 50 in the chamber. The pressurized air is guided and accelerated when passing through the spiral groove of the spiral section of the strike rod 26. Therefore, the bullets 50 can be delivered at high speed.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

1. An air gun comprising: a handle and a barrel connected to the handle, a trigger connected to the barrel; a strike assembly received in the barrel and including a strike bar which has a pull end extending from a rear end of the barrel and a push member connected with the strike bar, a pawl pivotably connected to the barrel and the push member including a groove so that the pawl is removably engaged with the groove, the pawl being pivoted by the trigger, a strike rod having a first end fixed to the strike bar and a second end of the strike rod having a spiral section, the spiral section located in a chamber in the barrel, a first spring connected between the attached member and an end cap connected to the rear end of the barrel; a valve assembly received in the barrel and including a tubular member and a piston movably extending through an axial passage of the tubular member, a gap defined between the piston and an inner periphery of an aperture defined through the tubular member, a first end of the piston extending out from the tubular member and facing the push member, a second end of the piston fixed to a seal which is biased by a second spring so as to removably seal the aperture of the aperture in the tubular member, a radial hole defined through a wall of the tubular member and communicating with the chamber of the barrel, and a magazine connected to the barrel and adapted to feed bullets into the chamber of the barrel.
 2. The air gun as claimed in claim 1, wherein the piston has a flat surface defined in an outside thereof and the gap is defined between the flat surface and the inner periphery of the aperture of the tubular member.
 3. The air gun as claimed in claim 1, wherein the strike rod has a threaded section on the first end thereof and the strike bar has a threaded hole defined therein so that the threaded section is connected to the threaded hole.
 4. The air gun as claimed in claim 1, wherein the second end of the piston includes a threaded end and the seal has a threaded hole with which the threaded end is connected.
 5. The air gun as claimed in claim 1, wherein the strike bar is located parallel to the push member, a pin connected between the strike bar and the push member. 